Automatic window-latch.



LE. HEIKKILA.

AUTOMATIC WINDOW LATCH.

APPLICATION FILED NOV. 2. 1916.

1,233,055. Patented July 10, 1917.

.25 "-provideie latch of the class described which es-aces. I I Api'lieation filedfl'o'vem'ber 2,1916. eriei Etc. 129153 .5 0, all whom itmay cnoe1%;

" Q seem" s;

Beit known that" 1, JOHN E. HEIKKI A, a,

.citizen of the United, States, end resident of Syracuse, in the countyof ()nondegzt and State of-New vYork, imve invented certain new anduseful Improvements in Automatic WiIidOW-Letches, of which the fciiowingis e specification.

vThe present invention ieizites tc window latches endi es. foi' itsprimary object the 'prov1sion Oi" e novel and simple form of so tometicWindow latch adapted for .insteihe ticnon the meeting mils of sliding"sashes.

Another object of my invention is to pro 15 videa Window latch of theclass described which upon moving the sashes of Window [to closedposition eutometiceiiy locks the sashes in such position.

' A; further object of icy-intention is to provide a Window iatch cf theclass described which iii not in any Way interfere with the manipulationof the sashes. when epen and one which. is entirety automatic in.

so far as the-locking feature is concerned.

Astiii furtherob ect or my invention is to is strongend durable, may becheapiy men- 1 iufactured; end sold, does no require any skiiiin..inste1iing;-the same, and is effective in operation. Other ob ectsend advantages to be de rived fi om the use of my improved. auto vfciiowihg detailed description and the claims,

taken itheiii spection of the ecceinpeey sing-drawing, in which Figureis fi'agiiieiitei sectional View e1? e eir-of Window sashes showing myimhzview cfthe latch arm.

Referring more particular-1y to the draw-w ing, Whei em simiiai'characters oi fete/fence .desi mete like and COIi'fiSuOIlCiiYi :ierts bi b 1 M throughout the venous YMWSJIQ and ii designeteltheupper andiewei sashes of Window, theseme having ti'ie is'cei heveied meetingrails mend The ietchi ig device 01' eludes an ehutmeet member designatedA surface of the rail 13.. A supporting block ietch emu e described indeteii heieliieftei.

.EgEI-EKILA, es

.1 Lemme W Specification efltettersPeteiit.

tim

Referring specificeiiy to the I abutment member A, the seine consists ofI e body termed with e hesportion 15- through 18 -the pio'jectien 18pyramidal iii appealence ha: mg converging curved surfaces, 19. Themember ii ispi'ovided with a recess 90 and a pair of aiined transverseopenings 21 in which the sliding hoit 22 is mounted, said sliding boltprojecting from the inner surface of themember A under the action of acoil spring 23. The outei'tfree end of the siidiiig holt 23 is previdedwithknob or handle 24 to ?withdrawing the seine. 1

The ietch arm a is p 'eferebiy curved in general cont-cur, the samebeing provided with enopening through Whiche be'erihg pin 26 is engaged,said .ietch arm a: being mounted between the s endardsQ? formed on themember B. The ihner edgeof the member ii is receseedes cit 28tojfconform the member A when in locked position.

The ietch arm a is plfOYideCi i'vith." ei ec ess 30 having a straightbottom 'weii fil end a diagonal tap wail 1'. 2i A. shouidei 33 is formedon the member B between the farms 2? to limit the movement cf the hitcha-n i a and prevent the same from contalctiii g with the WindeW pa IWhen closing the Wi.i1dovi?,'ti1e sas he moved into engagenie it' asshow 1, the arm a being in the inoperative 1' unlatched position and thesliding hoitect iiig from the member f imieii the bolt strikes therecess 30 the arm afwfli be caused I to swing into engegemehtlwiti themember A. as shown in While theses/1132 the recess 36 is incline-ii;thejengie.ofjnclinw ticn is not sufiicient to ermit eo'peni iig of theM311 by raising thesesh'. the fi'ee'end of the Emit 22 engaging the Wail32 thereby preventing raising ofthe iowe sash cf'iowei'ing of" the uppersash. if ccurse; the err'ri a eztthis time Tagged with thei'ne'iiiber A,and in view of curved siirfeees ifii ofthe giroje'ctich 18 ei'igegingsnugly in the/recess 28 the strain is Fezloved froni'the bolt anddistributed tiiroughcut the arms and said projection, Itwiii foe readilyapparent that my impreved. .ieteh is memes in operation in so far as thelocking feature is concerned. Of course, when it is desired to open thewindow it is necessary to withdraw the bolt 22 from engagement with therecess 30 thus permitting rotation of the arm a and disendevice asembodying a specific structurefI desire that it be. understood that suchchanges may be made in said structure as do not depart from the spiritand scope of the invention as claimed.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1, In a device of the character described the combination with themeeting rails of window sashes, ofan abutment comprising a body portion,abase formed on the body portion adapted to be secured to one of themeeting rails, a" pairiofprojections formed on the upper part of thebody portion, the surface of one of thepr'ojections being curved, theabutment being provided with are'cessed portion, said abutment beingprovided with alined opemngs on opposite sides of the recess, a slidingbolt mounted in the openings, a coil spring mounted on the bolt withinsaid recess, a supporting member rigidly secured to the othermeetingrail, and a latch arm pivotally mounted on said supportingmember, having a recessed portion adapted to normally engage the bolt,the latch arm being provided with a recessed portion adapted to beengaged by the projections for a purpose specified.

2. In a device of the character described the combination with themeeting rails of window sashes, ofan abutment comprising a body portion,a base formed on the body portion adapted to be secured to one of themeeting rails, a pair of projections formed on the upper part of thebody portion, the surface of one of the projections being curved, the.abutment being provided with a recessed portion, said abutment beingprovided with alined openings on opposite sides of the recess, a slidingbolt mounted in the openings,

" a coil spring mounted on the bolt within said recess, a supportingmember rigidly secured to the other meeting rail, a pair of standardsmounted on the supporting member having alined openings therein, and alatch arm hav-.

ing a transverse opening inone end thereof.

a pin mounted in the openings of the supporting member and the latch armto pivotally engage the same, the latch arm having a recessed portionadapted to be normally engaged by the bolt. the latch arm being providedwith a recessed portion adapted to be engaged by the projections, andthe free ends of the latch arm member being beveled for a purposespecified.

3. In a device of the character described the combination with themeeting rails of a window sash, of an abutment comprising a bodyportion, a base formed on the body portion adapted to be secured to oneof the meeting rails, a pair of projections formed on the u'pper part ofthe body portion, the surface of one of the projections being curved. s0jthe abutment being provided with a recessed portion, said abutment alsobeing provided with alined openingson opposite sides of the recess, asliding bolt mounted in the openings, a coil spring mounted on the boltwithin said recess, a supporting member rigidly secured to the othermeeting rail, and a latch arm pivotally mounted on said supportingmember having a recessed portion,

said recessed portion having a straight bot tom wall adapted to benormally engaged by the bolt, said supporting member having a shoulderformed thereon, the latch arm being adapted to engage said shoulder,said latch arm member being recessed to conform to the shape of one ofthe projections to engage the same, and the free ends of the latch armbeing beveled to conform to the inner edge of the other projection for apurpose specified.

i. In a device of the'character described'loo the combination with themeeting rails of window sashes, of an abutment comprising a bodyportion, a base formed on the body portion adapted to be secured to oneof the meeting rails, a pair of projections formed on the upper part ofthe body, the surface of one of the projections being curved, theabutment being provided with a recessed portion, said abutment beingprovided with alined openings on opposite sides of the recess, a

sliding bolt mounted in the openings, a coil spring mounted on the boltwithin said'recess, a supporting member rigidly secured to the othermeeting rail, a palr of standards mounted on. the supporting member, ashoul- 11'5 der formed between the said standards, a latch arm pivotallysecured to the standards the movement of which being limited by saidshoulder, said latch ar'm having a recessed portion adjacent one endadapted to be engaged by said bolt, and a portion of the latch arm beingof a contour supplemental to that of the abutment for a purposespecified.

In testimony whereof, I afiix my signature hereto.

JOHN E. HEIKKILA.

